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  • mac
    mac
    noun
    fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).
  • Mac
    Mac
    noun
    a male given name.
  • Mac.
    Mac.
    abbreviation
    Maccabees.
  • M.Ac.
    M.Ac.
    abbreviation
    Master of Accountancy.
  • Mac-
    Mac-
    a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.
  • MAC
    MAC
    abbreviation
    multiplexed analogue component: a transmission coding system for colour television using satellite broadcasting
Synonyms

mac

1 American  
[mak] / mæk /

noun

(often initial capital letter)
  1. fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).


mac 2 American  
[mak] / mæk /
Or mack

noun

Informal.
  1. a mackintosh.

  2. McIntosh.


mac 3 American  
[mak] / mæk /
Mac 4 American  
[mak] / mæk /

noun

  1. a male given name.


Mac. 5 American  

abbreviation

  1. Maccabees.


M.Ac. 6 American  

abbreviation

  1. Master of Accountancy.


Mac- 7 American  
Also Mc-,
  1. a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.


Mac 1 British  
/ mæk /

noun

  1. an informal term of address to a man

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

MAC 2 British  

abbreviation

  1. multiplexed analogue component: a transmission coding system for colour television using satellite broadcasting

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mac. 3 British  

abbreviation

  1. Maccabees (books of the Apocrypha)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mac- 4 British  

prefix

  1. (in surnames of Scottish or Irish Gaelic origin) son of

    MacDonald

    MacNeice

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

mac 5 British  
/ mæk /

noun

  1. informal short for mackintosh mackintosh

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mac1

First recorded in 1650–60; special use of Mac

Origin of mac2

Shortened form

Origin of mac3

Shortened form

Origin of Mac-7

< Irish, Scots Gaelic mac son, Old Irish macc; akin to Welsh, Cornish mab

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Tossed with olive oil, tomatoes, jalapeño, feta and Parmesan cheese, the expertly al dente Rustichella rigatoni is not your everyday mac ‘n’ cheese dinner.

From Los Angeles Times May 23, 2026

The offerings include returning items, such as a smoky burger and chicken sandwich, plus a new side — mac and cheese.

From MarketWatch Apr. 29, 2026

They arrived alongside Kraft mac and cheese and green beans, the plate a tidy arrangement of beige, orange and green.

From Salon Apr. 10, 2026

They have taught her a few things: how to make mac and cheese, follow American football and wear university merchandise without shame.

From The Wall Street Journal Mar. 16, 2026

Diego talked with his mouth full of mac and cheese.

From "We Are the Ants" by Shaun David Hutchinson

“Notably, despite these pricing actions, we have not observed any meaningful changes in Mac or iPad lead times,” Woodring wrote.

From MarketWatch Jul. 14, 2026

Across those games, Mac Allister has played 539 minutes, won 31 duels, 10 tackles, made nine interceptions and applied high pressure 208 times - all numbers which put him high up in the rankings.

From BBC Jul. 14, 2026

Mac Allister's CV already contains a World Cup and a Copa America title, as well as a Premier League title.

From BBC Jul. 14, 2026

And we expect Apple Watch, iPad and Mac updates, too.

From The Wall Street Journal Jul. 12, 2026

“I’ll go put on a pot of coffee,” said Mac.

From "Eleven" by Tom Rogers

“Mac Jones, for sure. Yeah, Mac. He’s the best,” Parker said.

From Washington Times Aug. 3, 2023

“My life was completely wrapped up in Fleetwood Mac. You can call in sick to a job, a boyfriend, even a husband, but you cannot call in sick to Fleetwood Mac – ever.”

From The Guardian Apr. 17, 2019

“It was only made for the Mac. It was less than one percent market share in the U.S. They like to say ‘low single digits.’

From The Verge Jun. 13, 2017

"He was the first person to buy a Mac. He was the first person to tell me about the Internet. I had no idea what he was talking about."

From Los Angeles Times Jul. 25, 2015

“He fought dirty, Mac. So how ’bout shuttin’ up,” Red said.

From "The Great Santini" by Pat Conroy

Apple tends to hold a second Mac- or iPad-focused event in the fall roughly every other year.

From Slate Sep. 11, 2018

Simply put: If your school requires any Mac- or Windows-only apps, then you can’t use an iPad in place of an actual laptop.

From Slate Jul. 27, 2018

Kathlene Mac- Donell is rather better as the cabaret performer.

From Time Magazine Archive

He went farther in ten days than did Britisher Mac- Laren, covering 5,468 miles in 45 hours and 20 minutes of actual flying time.

From Time Magazine Archive

While we were taking Bougainville, General Mac- Arthur’s forces would be landing on the western end of New Britain Island at Cape Gloucester to establish a new airfield there, too.

From "Code Talker: A Novel About the Navajo Marines of World War Two" by Joseph Bruchac

The U.S. company—home to brands such as MAC, Smashbox and Jo Malone—has been undergoing a business turnaround under new leadership.

From The Wall Street Journal Mar. 24, 2026

And should the RedHawks stumble in the MAC tournament, a decision to exclude them with a single defeat would be unheard of.

From The Wall Street Journal Mar. 2, 2026

The athletic department is paying $23 million over five years to move its football team into the MAC and paying travel costs for league opponents to play in Sacramento.

From Los Angeles Times Feb. 24, 2026

He said that its “consumer-facing” investments included opening new retail locations for its luxury fragrance brands while closing some of its MAC and Origins locations.

From MarketWatch Feb. 5, 2026

The "MAC" stood for Project MAC, the DARPA-funded research project that gave birth to the AI Lab and the Laboratory for Computer Science.

From Free as in Freedom: Richard Stallman's Crusade for Free Software by Williams, Sam

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